31,660 research outputs found
Grace in Spoofax
No full textGrace is a programming language that aims to be an example of a contemporary object-oriented language, to be used for teaching university level students. The language specification of Grace is informal, and its various implementations are difficult to comprehend and change. Spoofax Grace is an implementation of the Grace programming language, meant to serve both as a reference implementation, but also a specification, that can be easily read, understood and changed. Spoofax Grace is implemented using the Spoofax language workbench, providing a declarative grammar, program transformations and dynamic semantics. From these specifications a language interpreter is generated that can execute Grace programs. The system covers the core aspects of Grace, yet a number of language features remain unimplemented. The implementation can be correlated to the informal Grace specification, and can be changed or extended at will.Electrical Engineering, Mathematics and Computer ScienceSoftware TechnologyProgramming Language
Ted Grace
No full text"Ted Grace (E.W.) 21713 RAAF W/T - (Wireless) Operator 1942 - 1943 {Served with RAAF - - Navy lugger "Ibis" && attached to Army H.Q 1944 - 45 (No.1 Squadron) Beaufort Bomber[s] Gould Airstrip (near Batchelor[)] [19.5.92]".Ted Grace (E.W.) 21713. Royal Australian Air Force. W/T - (Wireless) Operator 1942 - 1943 {Served with RAAF - - Navy lugger "Ibis" && attached to Army Headquarters. 1944 - 45 (Number 1 Squadron) Beaufort Bomber[s], Gould Airstrip (near Batchelor[)] [19.5.92]
Grace Thompson Edmister in Headband
No full textPortrait of Grace Thompson Edmister ca. 1930. Edmister was a musician, teacher, and director of the Albuquerque Civic Symphony (New Mexico Symphony Orchestra), which she helped found in the 1930's
Rights issues for digital video
No full textAn examination of the legal, technical and policy issues surrounding digital video resources in higher education
Grace Halsell
No full textletter from author John Howard Griffin to Halsell1752px x 1084px7/25/72 [postcard]
Dear Grace,
Buried in work and know you are too. Had a good talk with your mother the other evening.
Hope to see you soon. Love from all the Griffins.
Howar
Life with a weak Heart; Prolonging the Grace Mission despite degraded Batteries
No full textThe two Grace satellites were successfully launched on March 17, 2002 by a Russian Rockot launcher. GRACE not only was the first dual-satellite mission operated by GSOC, but it also
was the first formation-flying occurring at an altitude below 500 km. The mission is extremely successful from a scientific point of view and the originally envisaged mission duration of 5 years has more than doubled by now. A follow-on mission is planned by the same partners for 2016 and JPL projects a new generation in the twenties, so there is a strong incentive to prolong GRACE and try to bridge the gap.
Infirmity comes with age and several components have deteriorated or are defunct. Nevertheless, the scientific goals can still be obtained to nigh on 100%. The major challenge
for operations is posed by the degradation of the NiH2 batteries. These are comprised of 20 cells packaged in the common pressure vessel (CPV) configuration. However, two cells have shorted out on Grace 1 and one on Grace 2. The available capacity of the operational cells is also severely degraded. The current operational capacity of the batteries is limited to ≤ 3 Ah as compared to the original nameplate capacity of 16 Ah.
This paper describes the special operations needed to prolong the mission despite the considerable power constraints. The first Section gives a general overview with emphasis on the components relevant to this paper. The battery, its current state and the mission specific circumstances which require special handling are described in Section 2. The several threats to and failure mechanisms of NiH2 batteries are also presented here. The third Section then contains a detailed description of all measures taken to pamper the batteries. This includes
heater and parameter settings, special on-board macros, orbit-to-orbit charge regulation, but also physical actions such as turning the satellites away from the Sun to force battery
discharging and subsequent charging. The fourth Section, finally, presents conclusions, recommendations and an estimation of how long the Grace mission can be prolonged
NJVid: New Jersey Statewide Digital Video Portal
No full textPresentation to the 2008 Spring StatesNet meeting describing the development and technical functionality of the statewide digital video portal, NJVid.NJVid is funded by the Institute of Museum and Library Services and is a collaboration of William Paterson, NJEdge and Rutgers University. The three year project will offer three collections, the NJVid Commons collection of freely available videos, commercial collections at participating organizations and lectures captured in the classroom by participating educators
Grace S. Fong, Herself an Author : Gender, Agency, and Writing in Late Imperial China, 2008
No full textZufferey Nicolas. Grace S. Fong, Herself an Author : Gender, Agency, and Writing in Late Imperial China, 2008. In: Études chinoises, n°28, 2009. Numéro spécial sur le droit chinois. pp. 243-247
Grace Aguilar’s historical romances
No full textPhDMy dissertation looks critically at Grace Aguilar’s historical romance novels and short
stories, and investigates English writers’ uses of history in early- to mid-nineteenth century
fiction. Shifting the current critical emphasis on Aguilar’s Jewish texts, I
have analyzed the ways in which Aguilar revises the genres of the national tale, the
gothic romance, and the medieval romance in order to demonstrate her participation
in the construction of nineteenth-century domestic values.
In Chapter One, I introduce to critical debate Aguilar’s juvenilia, relying on
unpublished manuscripts and novels published only in the twentieth century to
establish the origins of Aguilar’s interest in history and historical writing. Locating
Aguilar’s narrative style in the early nineteenth-century national tale, I show that as a
child Aguilar envisioned the English and Scottish nations as a family, making
domesticity both a private and a public—a female and a male—value.
Chapter Two focuses on Aguilar’s use of history to express nineteenth-century
domestic ideals in her version of the gothic romance. Deploying the setting of the
Catholic Inquisition in Spain and Portugal, Aguilar writes gothic tales that unite
Jewish and Protestant gender values. She makes heroic the Jewish female martyr to
suggest not only that nineteenth-century Protestants and Jews share similar domestic
principles, but also that Jewish women could be seen as ideal models for Protestant
women.
Finally, in Chapter Three I explore Aguilar’s participation in the nineteenth-century
medievalist tradition by reflecting on her revision of nineteenth-century literary
idealizations of the Middle Ages. In these short stories, Aguilar fictionalizes the
sixteenth-century European chivalric ethos, looking critically at the role of women in
court society at the end of the Middle Ages. Deploying the tropes prevalent in
popular nineteenth-century anti-medievalist fiction, Aguilar debunks celebrations of
the Middle Ages by showing how chivalry is antagonistic to nineteenth-century
domesticity
Recommended from our members
Improving the observation of time-variable gravity using GRACE RL04 data
No full texttextThe Gravity Recovery and Climate Experiment (GRACE) project has two primary goals: to determine the Earth’s mean gravitational field over the lifetime of the mission and to observe the time-variable nature of the gravitational field. The Center for Space Research's (CSR) Release 4 (RL04) GRACE solutions are currently created via a least-squares process that assimilates data collected over a month using a simple boxcar window and determines a spherical harmonic representation of the monthly gravitational field. The nature of this technique obscures the time-variable gravity field on time scales shorter than one month and spatial scales shorter than a few hundred kilometers.
A computational algorithm is developed here that allows increased temporal resolution of the GRACE gravity information, thus allowing the Earth's time-variable gravity to be more clearly observed. The primary technique used is a sliding-window algorithm attached to a weighted version of batch least squares estimation. A number of different temporal windowing functions are evaluated. Their results are investigated via both spectral and spatial analyses, and globally as well as in localized regions. In addition to being compared to each other, the solutions are also compared to external models and data sets, as well as to other high-frequency GRACE solutions made outside CSR.
The results demonstrate that a GRACE solution made from at least eight days of data will provide a well-conditioned solution. A series of solutions made with windows of at least that length is capable of observing the expected near-annual signal. The results also indicate that the signals at frequencies greater than 3 cycles/year are often smaller than the GRACE errors, making detection unreliable. Altering the windowing technique does not noticeably improve the resolution, since the spectra of the expected errors and the expected non-annual signals are very similar, leading any window to affect them in the same manner.Aerospace Engineerin
- …
